AULA 120560 Ghost Shark Expert Gaming Mouse Laser wired USB gaming mouse with 800-2000DPI 7 mouse button including forward backward DPI firepower and scroll wheel with 6 colors breathing backlight Unlimited firepower key without fatigue and 45 powerful self-defining keys with 5 groups Mouse Button: 7 (DPI, forward, backward, fire key) Button Durability: 5 million clicks